Omron CS1W-CLK12-V1, Operation Manual

Page: 185 / 312

168
Duplex Unit System Configuration Section 8-2
00 to 15 correspond to the unit number) turns ON. The reason for the
switch is recorded in the Duplex Communications Switch Cause Flags
(A042 to A049).
• If an error is detected in the standby Controller Link Unit by self-diagnosis,
a duplex communications error is detected at the CPU Unit, and the corre-
sponding Duplex Communications Standby Unit Error Flag (A43700 to
A43715: bits 00 to 15 correspond to the unit number) turns ON. The
active Unit will continue to operate normally and communications will con-
tinue. There will be no active/standby switchover.
8-1-2 Online Replacement
In CS1D Systems, a Controller Link Units with an error can be replaced with-
out turning OFF the PLC’s power supply (online replacement). For details on
the procedure for online replacement, refer to page 255.
Replacing a standby Controller Link Unit has no effect on communications.
When an active Controller Link Unit is replaced, there is an active/standby
switchover. The relevant node will temporarily leave and then re-enter the net-
work and communications operations will be temporarily stopped. For details
on the time required for communications to resume, refer to 8-5 Switching
Time for Duplex Units.
Note The online replacement procedure is performed from a Programming Con-
sole.
8-2 Duplex Unit System Configuration
8-2-1 System Configuration
Communications Units can be used in duplex systems by combining the
CS1D CPU Units and Controller Link Units given below.
Note 1. CS1D Systems require special Backplanes and Power Supply Units. For
details, refer to the CS-series Duplex System Operation Manual (W405).
C
P
U C
P
U C
P
U C
P
U
C
P
U C
P
U C
P
U C
P
U
CS1W-CLK12-V1 or CS1W-CLK52-V1
Controller Link Unit (token-ring mode)
CS1W-CLK12-V1 or CS1W-CLK52-V1
Controller Link Unit (token-ring mode)
PLC CS1D PLC CS1D
Optical fiber cable
(ring connection)
PLC CS1D
PLC CS1D
CS1W-CLK12-V1 or CS1W-CLK52-V1
Controller Link Unit (token-ring mode)
CS1W-CLK12-V1 or CS1W-CLK52-V1
Controller Link Unit (token-ring mode)
Backup
power supply
(24V DC)
Unit Model
CS1D CPU Unit CS1D-CPU65H, CS1D-CPU67H
Duplex-compatible
Controller Link Unit CS1W-CLK12-V1, CS1W-CLK52-V1